The Great Mass is the eighth studio album by Greek death metal band Septicflesh. It was recorded between July–September 2010 in Devasoundz (Greece) and The Abyss (Sweden) and produced by Peter Tägtgren. The orchestration was written by Christos Antoniou and recorded by the Prague Philharmonic Orchestra. Upon release, The Great Mass received universal acclaim from critics. In 2021, it was elected by Metal Hammer as the 9th best symphonic metal album of all time.

Septicflesh are a Greek death metal band from Athens, founded in 1990.